Moped deristriction/modding

[sunnyj58]

I got a piaggio zip 2002 plate. Its had the washer in the variator taken out and does around 40mph now.

I know there is a branch pipe on the exhaust I could cut off, but how much more power/speed would that add?

What else could I actaully do too increase the speed?

[FBSF]

Wait until you are 17 and buy a 125?

Seriously, it currently isn't a moped as it does over 32mph, so (assuming you are 16) your licence doesn't cover you to ride it, and your insurance is invalid.

How about 3-6 points on your license for "Driving otherwise than in accordance with a licence" and 6-8 points for "Using a vehicle uninsured against third party risks."

If you've managed to coax a few extra mph out of it without making it obvious, then that's up to you - my DT50MX used to do an indicated 39...I wasn't going to try and restrict it back to 30mph - but it was completely standard engine-wise.

Start to do things like making it louder or putting on an aftermarket loud pipe, and you're asking for trouble.

I really would wait until you can get something bigger. 40MPH is enough to cope with urban roads, which is all mopeds are really designed for.

[sunnyj58]

Im actaully 21. I use the moped too go too training which is about 6 miles away, along a 60mph road with quite a few hills.

Thats the only reason im looking too making the moped go faster.

I got a full car licence, but cars just cost wayyyyyy too much

[chris-red]

Sell it and buy a 125, it will be cheaper than modding your current one as well as being, Faster, more reliable and better on fuel.
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[sunnyj58]

Good thing about the 50 is the insurance is dirt cheap though.. Same with the tax.

I have a full car licence. But not sure if Ill need too take any tests or anything too actaully use a 125?

Also, the mopeds actaully the GFs, so doubt I can sell it.


What weight rollers would you recommend for the zip?

[Kickstart]

[Livefast123]

If you passed your car test before February 2001 then you have a full moped licence, if not then you have to do your CBT which then gives you your entitlement. On a 125 you'll need to have a provisional cat A and display L plates after doing your CBT.

I've just bought a 55 plate Zip on ebay and TBH i'm quite impressed for a 50. I removed the washer from the variator and it already had a Technigas Silent exhaust fitted, from what I understand is just a derestricted standard exhaust.

I weigh 15 stone and the thing will go off the clock on a straight road (50 Mph indicated).

Don't mess with it anymore than you have to. You could fit a derestricted exhaust for around £60 that is the same as mine or if you have more cash to spend then you could put an expansion chamber sports exhaust on from around £80 upwards. If you go for the second option then you'll have to rejet the carb and fit lighter rollers to the variator. It just depends how much knowledge and work you are prepared to put in.

TBH a 125 sounds like a better option
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[FBSF]

[Teflon-Mike]

Make a moped do more than 32mph & its no longer a moped.
Doesn't meet the C&U regs which stipulate it cant do more than 32mph....
If its registered as a MOPED, then technically you need to present it for VOSA inspection for re registration as a motorcycle......
Must meet regs as a motorcycle, and be insured as a motorcuycle and ridden on a motorcycle licence, EVEN though its still only 49cc or less, its a motorcycle, NOT a moped, and them rules apply.
Riding a de restricted moped is daft....
Pretty obviouse if you get clocked at 40 its not restricted, then they can chuck the book at you for 'riding other than in accordance with your licence', plus invalid insurance, plus obtaining insurance by deception, plus riding a vehicle in 'unroad worthy condition' (not meeting C&U for vehicle type, plus failing to declare changes to DVLA....
They can pretty much pick the bike up and chuck it in a crusher before your eyes, THEN nail your arse to the wall with fines and licence endorsements.....
ALL on the 'evidence' of a speed gun......
Really think its worth it?
Oh, and if you have a car licence that does NOT automatically give you entitlement to ride a moped.
Hasn't done for at least ten years, so if you are twenty one, unless you somehow managed to get your car licence aged ten, you need at least a CBT certificate to 'activate' moped catagory on your car licence, but more likely merely the 'provisional' entitlement, so should also be on L's......
As said, leave it standard or buy a 125..... and if needs be, CBT
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[chris-red]

[sunnyj58]

I have got a CBT for 50cc. If I go for the 125 I imagine ill go for full licence because then atlaest I can have someone on the back too.

How does a sports exhaust make the moped go faster? If my exhaust doesnt have any restrictor I dont understand how it could make any difference?

Dont think I can afford a 125 so will have too stick too the 50 for now.

[Kickstart]

Hi

CBT for a 50 and a 125 are exactly the same. You can only carry a pillion with a full license whether it is a 50 or a 125. You can ride a 125 on a CBT just like a 50, and you need a new CBT every few years on either.

Sports exhaust can make a difference (but likely makes most difference to noise). However likely by moving peak torque further up the rev range (so making more power as power = torque x rpm), so you might well land up needing to play around the the weights in the transmission to take advantage of it. No point in producing more power at 12k if the transmission won't allow enough slip to get the revs that high.

All the best

Keith
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[Nope.]

Right, I think the OP is informed enough now about alternative options to his mode of transport, so lets actually answer his question.

There are a few things that you can do to make a moped 'go faster' without serious modding or money. First thing to do is to buy a sports exhaust, on a budget id suggest a Leo Vince ZX, its an OK exhaust and does what it says on the tin. Get the chrome one because the non chrome rusts like hell. Remove the washer restrictor at the top of the down pipe and your good too go. Bolt that one onto the cylinder in replacement of the stock one and upjet the carb 3%-5%. You'll also need to change the rollers and fit tighter clutch springs, If you don't have an impact wrench and a Clutch bell holder around its probably best to get a garage to do the whole thing (You provide the exhaust), it should only be a couple hours labour. Whatever you do, dont buy a technigas exhaust, there not worth the money, spend the extra money and get a decent brand.

That should take your top speed up slightly, you'll probably see 60 out of it on the speedo, 55 in reality.

You could of course go further, you could fit a big bore kit, expensive sports pipe (Like a Yasuni Carrera) and so on, but if you cant afford a 125 I doubt you can afford that. The exhaust is £300 on its own!

A couple of words of warning though, 'Tuning' High mileage machines is always a risk. Considering its a 2002 I would seriously think about the reliability of it before you undertake this endeavour, you could end up with a piece of crap that breaks down all the time. Also, as said above, riding a derestricted moped makes it no longer a moped, it makes it a motorcycle. That means that you run the risk of a few points on your license and the moped being crushed.

Good luck with whatever you decide to do.
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[sunnyj58]

Thanks,

The Leo Vince ZX is one ive been looking at. But how can changing the exhaust make the engine go faster?

Dont understand because I thought surely the exhaust just removes the gases??

[Kickstart]

Hi

Bit more complicated than that, especially with 2 strokes.

A 2 stroke is exhaust is designed to use pressure waves to bounce around and such the next lot of exhaust gas from the engine and the next lot of fresh mixture into the engine. It will do this well in a particular rev range. If you move that rev range further up so you produce peak torque at higher rpm then you produce more power (power is just torque * rpm, so for more power you need to produce more torque or just produce the same torque at higher revs).

All the best

Keith
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[sunnyj58]

Another thing ive seen about how too increase performance off my bike is too remove the branch pipe, and the EGR system.

Has anyone done this before and can tell me what kind off performance increase I would expect too see?

[prawny1]

If you pass a cbt whilst holding a full car licence that cbt then becomes valid for life, this from what I understand relates to a moped/50cc entitlement only and does not require the rider to display L plates.

A 125 will need L plates and will be covered by your motorcycle licence not your car one.
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[prawny1]

[sunnyj58]

[prawny1]

A fully derestricted modern scoot will go 45-55 mph
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hellkat wrote:

Some people are only alive cos its against the law to kill them.

[Nope.]